On Sunday 440 people visited a museum that charges $9 for each child and $12.50 for each adult. If the museum earned $5,220 on that day, how

Question

On Sunday 440 people visited a museum that charges $9 for each child and $12.50 for each adult. If the museum earned $5,220 on that day, how many adults visited the museum on Sunday? o A. 360 Exhibits O B. 20 w o C. 80 D. 420​

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Khánh Gia 3 years 2021-08-27T19:30:22+00:00 1 Answers 18 views 0

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  1. thanhcong
    0
    2021-08-27T19:31:43+00:00
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    Answer:

    A) 360 adults

    Step-by-step explanation:

    c=quantity of child

    a=quantity of adult

    9c+12.5a=5220

    a+c=440    then c=440-a

    substitute for c

    9(440-a)+12.5a=5220

    3960-9a+12.5a=5220

    reduce

    3.5a=1260

    a=360

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